The standard, titled "Metal Foil for Printed Board Applications," establishes the requirements for the procurement of metal foils used in printed circuit boards (PCBs). It covers both unsupported foils and those supported by carrier films. Key Details of IPC-4562
One of the most practical aspects of the standard is its standardized coding system. A typical call-out (e.g., IPC-4562/3-CU-E-S-LP ) identifies everything a supplier needs to know about the material: ipc-4562 pdf